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Test: Genetics
Consider an alien species that has two major physical traits that follow the principles of Mendelian genetics: horn arrangement and horn color. For this species, forehead horns can either be arranged in a trio of small horns or as a single large horn. Horn color can be either black or white.
The trio arrangement is a dominant trait, and alleles for horn arrangement use the letter "T." The white coloration is also a dominant trait, and alleles for horn color use the letter "W."
1. | Which of the following would produce the highest proportion of offspring having three black horns when crossed with an alien heterozygous for both traits? |
TTww
ttWW
TtWw
ttWw
Jordan
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Ferris State University, Bachelor of Science, Biotechnology. Baylor College of Medicine, Doctor of Science, Genetics.
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